LR04 Benthic Stack

The LR04 stack [Lisiecki and Raymo, 2005] spans 5.3 Myr and is an
average of 57 globally distributed benthic d18O
records (which measure global ice volume and deep ocean
temperature) collected from the scientific literature. The records
were placed on a common age model using a graphic correlation
technique [Lisiecki and Lisiecki, 2002]. We also developed a new age
model for the stack using orbital tuning combined with constraints
provided by the average sedimentation rates of the 57 records.

Paleoclimate research has recently produced an explosion of new
paleoclimate time series, but fully utilizing the acquired data
requires coordinated analysis of globally distributed records. The
LR04 stack and its age model provide the paleoclimate community with
an important stratigraphic tool, which we hope will be used to
facilitate the comparison of widely distributed marine climate
records.